ASTM E1876 PDF


Buy ASTM E Standard Test Method for Dynamic Young’s Modulus, Shear Modulus, and Poisson’s Ratio by Impulse Excitation of Vibration from SAI. Status: Withdrawn ยท Replaced by: ASTM E Metals — Mechanical Testing; Elevated and Low-Temperature Tests; Metallography(ASTM VOL ). Purchase your copy of ASTM E – 15 as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards available.

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Historical Version s – view previous versions of standard.

Flat plates may also be measured similarly, but the required equations for determining the moduli are ast, presented. The specimens are subjected to minute strains; hence, the moduli are measured at or near the origin of the stress-strain curve, with the minimum possibility of fracture.

There is no requirement for complex support systems that require elaborate setup or alignment.

ASTM E1876 – 15

A range of acceptable resonant frequencies is determined for a specimen with a particular geometry and mass. Any specimen with a frequency response falling outside the prescribed frequency range is rejected.

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The actual dynamic elastic modulus of each specimen need e11876 be determined as long as the limits of the selected frequency range are known to include the resonant frequency that the specimen must possess if its geometry and mass are within specified tolerances.

Specimen descriptions should include any specific thermal treatments or environmental exposures that the specimens have received. Specimens of these materials possess specific mechanical resonant frequencies that are determined by the elastic modulus, mass, and geometry of the test specimen.

Theory | IMCE – Your partner in the Impulse Excitation Technique

The dynamic elastic properties of a material can aetm be computed if the geometry, mass, and mechanical resonant frequencies of a suitable rectangular or cylindrical geometry test specimen of that material can be measured.

Dynamic Young’s modulus is determined using the resonant frequency in either the flexural or longitudinal mode of vibration. The dynamic shear modulus, or modulus of rigidity, is found using torsional resonant vibrations.

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Dynamic Young’s modulus and dynamic shear modulus are used to compute Poisson’s ratio. Test Methods CCCCCand C may differ from this test method in several areas for example; sample size, dimensional e186, sample preparation.

The testing of these materials shall asm done in compliance with these material specific standards. Where possible, the procedures, sample specifications and calculations are consistent with these test methods.

No other units of measurement are included in this standard. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Link to Active This link will always route to the current Active version of the standard.